Double-taper cone



present invention with 'the understanding Patented `I uly" 6, 1926.

PRODUCTS COMPANY, oF soUTH CAROLINA.

PArENToF CHARLES K. DUNLAl, or 'HARTsv1LLE-,-

FICE.

SOUTH` CAROLINA, AJSSIGNOR '10 SONOCO HARTSVILLE, soUTH CAROLINn, A'CoRroRATIoN oF DOUBLE-TAER GONE.

Application led March 23, 1925. Serial No. 17,7351.

This invention relates to cop cones as used in the textile industry and more particularly to double taper cop cones such as described in the patent to John McKean 1,391,961, Sept, 27, 1921.

It is a general object of the present invention to provide a novel and improved form of double taper cop cone.

More particularly it is an object of this invention to provide a double taper cop cone having a roughened or corrugated surface throughout its length.-

Another object ofv the ypresent invention consists .in the provision of means for pro` viding the steeper taper ofthe cone 'with a roughened surface.

A further object of the present invention consists in the provision of means for `rein forcing the steeper taper of the cone.

in the accompanying drawing and following specication there is disclosed by way of example only, a single embodiment ofthe however that various changes in the size, 1 shape, arrangement and proportions of the various parts may be made Without departing from the spiritv of the inventionas set forth in the accompanyingclaims.

In said` drawing: Fig. Y1 is an elevation of an improvedv double taper. cop cone constructed in accordance with the.` present invention; and Fig. is a longitudinal 'section through thesame. f In the McKean Paten-t 1,391,961 there, is disclosed. aA double taper cop cone together with a' full explanation of the advantages of such a cone and in the McKean Patent 1,443,370 there is disclosed a typeof cop to be wound on such a cone, together withthe advantages of this improved type of cop. In the manufactureA ofdouble taper cones, a cone is usually wound upon-va mandrel having the double taper. This conn is formed from a single sheet or blankof paperl and J is wound in theusual manner tothe less steep slope, that is, to forma coneof a single slope or taper after which the cone while still soft, due to the adhesive material 'in' which it is soaked prior to winding, is forced into a die or against forming'rollswhich reduces the tipto conform to' thesteeper taper of the mandrel and rounds and closes the end. Cones are wound from blanks of which is Wound upon the cone in the form of a cop. Suchslippage results in an im roperly formed cop and may result in tang es or snarls if the slippage takes place when the tipr to prevent slippage of the thread or yarn the yarn is unwound. The resent invention provides a means for forming double taper .cones and yet retainingthe. roughened surv face throughout.

Referring to the drawings there is disclosed generally at 10 a double tape-r cop cone formed by Winding a blank. of paper into' conical form. The blank is first wound into a cone having the taper indicated at l1 corresponding to the main or body portion of thecone and .in its first stage assumes the shape at the tip end indicated by dotted lines 12. Vhilc the cone is still in a soft condition due tothe adhesive used to hold the turns together, it is forced into a die or against rollers which conform it to the surface of the double taper mandrel and reduce its tip end 13 toithe form 'shown in FigureA 1.` This removes the roughened or corrugated. surface .from the paper due to the pressure of the die or rollers on the soft paper.l t'

vIn order to provide, therefore, -a rough- 'ened surface on the reduced end having the steeper taper, a second or smaller cone having the sametaper as the reduced end is lformed in the usual manner. This- .cone has a thinner wall than the main cone and 1s,

slipped over .it and joined to it by the same adhesive used in the forming of the main and auxiliary' cones. in order that there may not be a break or shoulder where the taper Changes along the circumference 14, as shown in Figure 1, the reduced end of the main part of the cone is compressed orl squeezed down to form a shoulder 15, as

shown in Figure 2, sothat the reduced endofthe main portion'of the conelies below the surface of the portion 11 a distance equivalent to the thickness of the auxiliary or tip cone sc that when this tip cone is placed in position, its surface conforms to aesl the surface of the portion 11 of the main cone and no break in the continuity of the surface is evident.

- When reducing the tip of the main portion ofthe cone, the end is rounded as Vshown i at 16 and the auxiliary cone is alsoI provided ofthe main cone by compressingand distorting the paper, that the end will be Weakp ened due to its distortion but by, providing the auxiliary tip portion which is securely fastened to the` main cone by adhesive, this weakened tip is reinforced and made to be even stronger than the body of the main cone, which is of considerable importancel since the tip is subjected to more abuse t-han the other portions of the cone. f

Having thus described the invention what isclaimed as new and desired to be secured by Letters Patent is:

I. In a double taper `cop cone of the class described, in combination, a taperedmain body portion, a tip portion having a steeper taper and a reinforcinggmeans on said tip portion, both of said portions being adapted to recelve yarn,

2.` In a double taper cop cone of the class described, incombination, a tapered body portion, a tip portion having a steeper taper, and a reinforcing means on the tip portion having a roughened surface.

'3. In a double taper cop cone of the class described, in combination, a main cone having a tapered base portion and a tip portion of a steeper taper, said tip portion having its surface below the surface of the main portion and an auxiliary conerfitting over and secured to said tip portion and having its surface contiguous with the surface of the main portion, both of said portions being adapted to receive yarn.

4. In a double taper cop cone of the class described, in combination. a tapered main body portion, an integral tip portion having a. steeper taper and means ,covering said tip portion and provided with a roughened surface.

5. In a double taper c op cone of the class described, in combination, a tapered main body portion formed of paper-like material, an integral tip portion lhaving a steeper taper, the surface of `said tip portion being below the surface lof the main portion, and an auxiliary cone of the same material covering said tip portion, both of'said portions being adapted to receive yarn.

6. In a double taper cop cone of the lclass described, in combination, a tapered ymain CHARLES n. DUNLAP.

Q body portion, an i'ntegrah tip portion having l a steeper taper and forming a shoulder'aty the junction of the two tapers, and a supple- 

